G Workspace and Squarespace DNS Setup

I have a domain & website through Squarespace. I subscribed to G Workspace separately. G Workspace verifies the Squarespace domain but I'm unable to troubleshoot the requested manual TXT/MX DNS set up on Squarespace. Squarespace says the "domain is already in use"

Requirements:
- Connect Google Workspace email to my existing Squarespace domain
- Ensure proper configuration so I can use domain-specific email addresses

Required Skills and Experience:
- Experience with Google Workspace and Squarespace integration
- Familiarity with domain management and DNS settings
- Ability to troubleshoot G Workspace domain integrations